Connecting plug



FIG. 1 is a front, perspective view of a connecting plug in accordance with the present invention, showing the right side and top thereof;

FIG. 2 is a rear, perspective view of the connecting plug shown in FIG. 1, showing the right side and bottom thereof;

FIG. 3 is a front, perspective view of the connecting plug shown in FIG. 1, with the two parts thereof separated; and,

FIG. 4 is a rear, perspective view of the connecting plug shown in FIG. 1, with the two parts thereof separated. 

The ornamental design for a connecting plug, as shown and described. 